Self-Paced Learning

Fans in Air-Handling Systems


  • Online Course
  • Free
  • 1.5 hours
  • 1.5

Fans used in air-handling systems often have a significant impact on energy use and acoustics. How much of an impact depends on how a fan is selected, installed, and operated.

This program discusses fan performance curves and fan laws, different fan types (fan blade shape, housed vs. plenum fans, direct-drive plenum fans, fan arrays), how a fan interacts with various types of systems, considerations when selecting a fan (efficiency, acoustics, footprint), and the ASHRAE Standard 90.1 fan power limitations. What you will learn:

  • How to select, install, and operate fans to avoid problems related to inadequate airflow or excessive noise
  • When to select the different fan types (housed vs. plenum, belt-drive vs. direct-drive, single fan vs. a fan array)
  • How to design fan systems to meet the prescriptive requirements of ASHRAE Standard 90.1-2007

Course Details
Click on the Start Quiz button to view video. NOTE: There is no quiz associated with this particular ENL. 



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